AF-assist beam Many PowerShot camera models employ an Auto-Focus assist beam to aid focusing in lower light. If this beam is blocked the camera may have difficulty focusing.
In the event that the camera and the computer does not see each other, restarting the services described below may help . (This requires Administrative priviliges with your PC. For additional assistance, refer to the computer user manual or consult your computer manufacturer.)
Installing the Battery Be particularly careful to keep the date batteries out of the reach of children. Seek medical assistance immediately if a child swallows a battery since corrosive battery fluids could damage the stomach or intestinal wall.